Quote Originally Posted by BobBong
Increasing the amount of hours the plant is getting can stress the plant. If you're going to do 24/0, do it from the start. Then decrease from there. It's a cycle plant meaning that as it ages it matures into its next cycle. Reversing that cycle can confuse the plant and depending on genetics and circumstances (like heat,nutrients,etc.) it can stress the plant to grow male flowers. Avoid increasing the hours of light and only decrease it as this will simulate the end of the season.

Hope this helps,
Bob.
I agree. Having used the 24hour (t2.4kW-HPS) light method from the start of vegging clones for little over 1 week, as soon as I turned the lights down to 18/6 they grew very quickly and gave me many nodes and inter-nodes as a result. It may not work for everyone and running MH/HPS all day and night is not cost effective unless you are aware of what you are doing as not to waste all ones' money on the bill. I work with clones to ensure they are female, therefore unless I do something drastically wrong they shouldn't herm up. Good luck
home.grower Reviewed by home.grower on . vegging who has tried both th 18/6 and 24hr veg cycle?which best ,,what diferences are there? doesnt the 24hr stress the plants? can u use 24hr straight from seedling? Rating: 5